I am very flexible, let me know when you are available.
Ronald Reagan Park
I've taken Hummer and King here a few times, its an off leash secure area and really quite nice. I cut and pasted the following info from the parks website.
Location: 2777 Five Forks Trickum Road, Lawrenceville 30044
Description:Acres: 25
Ronald Reagan Park has something for every member of the family, even the one with four legs! The park is home to the county's first dog park, a two-acre fenced-in area where dogs can play off their leashes. The park is also Gwinnett's first Passive Community Park and boasts a "senior" area with horseshoe pits, shuffleboard courts, bocce ball courts and a pavilion with permanent chess and checkerboards. Other amenities include a small skate area, a playground, two half basketball courts and a 3/4 mile paved multi-purpose trail. Several covered picnic areas and a small pond also features of this neighborhood park.
http://www.co.gwinnett.ga.us/cgi-bin/gwincty/egov/ep/gcNavView.do?BV_UseBVCookie=yes&path=Departments%7CCommunity+Services%7CParks+%26+Recreation%7COur+Parks+%26+Facilities%7CGuide+to+Your+Parks|Ronald+Reagan+Park